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(11)

EP 2 571 542 A2

(12)

(88) Date of publication A3: 05.04.2012 (43) Date of publication: 27.03.2013 Bulletin 2013/13 (21) Application number: 11778401.7 (22) Date of filing: 06.05.2011

(51) International Patent Classification (IPC):  A61L 27/14(2006.01) A61L 27/50(2006.01) A61L 27/30(2006.01) A61L 27/10(2006.01) A61F 2/44(2006.01) (86) International application number: PCT/US2011/035468 (87) International publication number: WO 2011/140416 (10.11.2011 Gazette 2011/45)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 07.05.2010 US 332403 P (71) Applicant: Difusion Technologies Inc. Georgetown, Texas 78726 (US)	(72) Inventors: GHISELLI, Gary Denver Colorado 80220 (US) WHANG, Peter Milford Connecticut 06461 (US) HAFIZ, Jami Minneapolis Minnesota 55414 (US) CRUDDEN, Joseph Hudson New Hampshire 03051 (US) JOHNS, Derrick W. Austin Texas 78717 (US) (74) Representative: UEXKÜLL & STOLBERG  Patentanwälte Beselerstrasse 4 22607 Hamburg 22607 Hamburg (DE)